Answer:
The original price of the book was $12.50
Step-by-step explanation:
3x - 0.2(3x) + 10 = 4030x - 2(3x) + 100 = 400 30x - 6x + 100 = 400 24x + 100 = 400 24x = 300 x = 12.50
Substituting the data points into the model:
f(x)= -x2 + 2x -3
f(-2)=-11
f(0)=-3
f(1)=-2
f(3)=-6
f(5)=-18
So A is the right ans.
2.4x32=76.8
76,8/800=0.096
12
Your ratio is 24:8. This ratio simplified is 3:1. 4x3=12. x=12.
